Hi all you knowledgable gardeners the frost got to my agapanthus this year and has left some of the leaves soggy and slimey help will i lose this fantastic plant which flowered fantastically last year, what can i do with the leaves which have been affected and will it recover.

Hello,
I too have the same problem thanks to -10 degrees this last winter! I have got rid of all the dead leaves. I have dug up the plant and the roots are fine, so I'm going to divide it (apparently it's good to do this anyway with Agapanthus) and replant in a new spot. Let's hope they all come back to life!
Max